Shuttle.



R. GROMPTDN.

SHUTTLE.

APPLIOATION FILED JULY 18, 1907.

914,703. Patented Mar.9, 1909.

UNITED STATES PATENT OFFICE. 4

RANDOLPH ononr'i ou', or woecnsrnn, MASSACHUSETTS, ASSIGNOR TO GROMPTON & KNOWLES LOOMWORKS, A CORPORATION OF MASSACHUSETTS.

SHUTTLE.

Specification of Letters Patent.

Patented March 9, 1909.

Application mm July is, 1907. Serial No. 384,376.

To all whom it may concern:

Be it known that I, RANDOLPH CRoMP'roN, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Shut tles, of which the following is a specification.

My invention relates to ashuttle particularly adapted to be used in ordinary looms or in weft replenishing looms, in which a new fill ng carrier or bobbin is inserted when the filling in the running Shut le is substantially exhausted, and my inventi 11 particularly relates to an automatic filling thread cutting device, combined with a shuttle, and adapted to operate to cut the filling on the filling carrier or bobbin, when the filling is Substantially exhausted, and prior to the insertion of a new filling carrier or bobbin in the shuttle.

In weft replenishing looms in which selfthreading shuttles are used, mechanical, electrical, or magnetic means are employed to detect the Substantial exhaustion of filling on the bobbin in the running shuttle, and indicate for the operation of the weft re lenishin mechanism, and the insertion o a new bobbin in the running shuttle. The amount of waste filling left on the substantially exhausted bobbin when ejected, preparatory to the insertion of a new bobbin, is always considerable, but varies somewhat according to the eater or less sensibility of the detecting mec -anism.

The object of my invention is to do away entirely with mechanical, electrical, or magnetic detecting mechanism in weft re lenishing looms, to detect the amount of lling on the bobbin in the running shuttle, and to provide in lieu thereof a thread severing or cutting device combined with'a shuttle, b means of which the filling on the bobbin wiii be severed or out when the last few winds of filling are being drawn off from the bobbin.

In my improvements, I have afillin thread cutting device, which is automatical y operated, independently of the discharge of the filling carrier from the shuttle and referably a guide for the fillin combined wit said cutting device. -The filling is preferably held or retained in one osition by the guide during the drawing off rom the bobbin of the main art of the filling, and is then held or retained in another position by the guide when the last few winds of the filling are drawn off, and preparatory to the cutting of the filling bced on the shuttle box.

fore it is all drawn off from the bobbin by the movement of the shuttle.

The filling on a bobbin used in a shuttle in a weft replenishing loom, is Wound in one direction, and the free end of the fillin is fastened to some part of the loom, or old in some way, and when the bobbin is transferred from the magazine and inserted in the runnin shuttle, to take the lace of a substantia ly exhausted bobbin, t efilling, as it is drawn off of the bobbin during the movement of the shuttle across the lay, is b the threading mechanism ordinarily emp oyed on the shuttle automatically threaded into the eye of the shuttle.

A filling carrier or bobbin used with my improvements in a shuttle, instead of having all the filling on the filling carrier or bobbin wound thereon in one direction, as is 0115- tomary, has the first few winds in one direc tion, the amount offilling wound in said direction being sufficient for one or more picks of the shuttle across the lay, and the remaining winds of filling on the filling carrier or bobbin, are wound in a reverse direction. After the main body' of the filling has been drawn oil from the bobbin by the movement of the shuttle, said filling having a circular movement in one direction, and the filling wound in the reverse direction is reached, then Said filling will have a circular movement in the reverse direction. The circular movement of the filling, as it is drawn off of the filling carrier or bobbin, causes it to be held or retained in one position as long as the filling is unwound in one direction, but as soon as the filling begins to unwind in the reverse direction, the circular movement of the filling in that direction causes it to take a different position, which I term an abnormal position, and be held or retained preparatory to being out by the cutting device. The

1 cutting device is automatically operated in any suitable manner and independently of the discharge of the filling carrier from the shuttle, and as shown and described herein, by a trip attached to the hand-rail, or mountiilling causes the operation of the weft replenishing mechanism, as above stated, and the supply of fresh filling. The weft rcplonishing mechanism, and mechanism connected therewith, put into operation on the failure of filling in the running shuttle by the cutting thereof, will form the subject-matter The cutting of the of another application, and are not included herein.

I have only shown in the drawings a detached portion of a self-threading shuttle of ordinary construction, with my improvements combined therewith, suflicient to enable those skilled in the art to understand the construction and operation thereof.

Referring to the drawings :*-Figure 1 is a plan view of one end of a selfthreading shuttle with my improvements combined therewith. Fig. 2 is a transverse section, on line 2, 2, Fig. '1, looking in the direction of arrow 0, same figure. Fig. 3 is a central longitudinal section, on line, 3, 3, Fig. 1, looking in the direction of arrow b, same figure. Fig. 4 shows the cutting device shown in Fig. 2, detached, and in a different position. Fig. 5 is an inside view of the thread cutting device, looking in the direction of arrow 0, F ig. l. Fig. 6 is a partial section, on line 6, 6, Fig. 4, looking in the direction of arrow 0, same figure, and also shows a supplemental device for operating the cutter.

In the accompanying drawing, 1 is a portion of a shuttle, 2 a threading device of any usual and well known construction, and COIII- bined with the end of the shuttle 1 3 is the top or outer end portion of a bobbin on which the filling is wound, and 4 is the filling leading from the bobbin 3.

I will now describe my improvements, combined in this instance with the shuttle, having the self-threading device shown in the drawing.

The back wall of the shuttle 1 is in this instance recessed at 1 to receive a block 5, preferably made of hardened steel, which secured in place by screws or rivets, or in any other suitable manner. The block 5 has in this instance two arms or )rojections 5, which extend inwardly there rom, and have their inner ends curved upwardly and backwardly, as shown at 5, to form an eye 5", see Fig. 2, for the filling thread 4.

Extending loosely between the arms 5,

and pivotally mounted on a pin 6 secured in said arms, is in tlns instance'a lever 7, the

inner upper edge of which is sharpened to form a cutting edge or surface 7, to cut the filling within the eye 5". The cutting lever 7 has its rear end extend outwardly through an opening 5 in the block 5, see Fi 4, and also through an opening 8' in a bodt 8, see Fig. 4, which bolt is loosely mounted in a vertically extending hole in the block 5. The bolt 8 has a head or outer surface 8, which has thereon in this instance, a curved or cam-shaped surface 8.

Two helically coiled expansion springs 9, in this instance extend within openings 5* in the block 5, see Fig. 6, and hear at one end against the inner end of said openings, and at their other end against the inner surface on the head 8 on the bolt 8, and act to yieldingly hold said head and bolt in their outer osition. The cam-shaped head 8 on the olt S, in this instance extends on the top or upper surface of the shuttle, and in the path of a latch or trip 10, see Fig. 6, in this instance, pivotally mounted on a stud 11 on the hand-rail, or some part of the shuttle box, not shown. As the shuttle enters the box in its passage acrbss the lay, the cam shaped head 8 on the bolt 8 is engaged b the trip or latch 10, and the head 8' and be t 8 are moved inwardly, causing thecutting lever 7 to move on its ivot pin 6, and the cutting edge 7 on said cutter lever to be moved to engage and cut the filling thread, in case it passes through the eye 5', as shown in F 1g. 4.

The filling guide 12 shown in this instance is made of thin sheet metal and referably of the shape shown in Fig. 2, anrFprovided with an attaching arm or support 12, in this instance secured to the lower edge of the block 5, or between the lower edge of said block and the shuttle body, see Fig. 2. The lower part 12" of the filling thread guide 12 is in this instance of spiral shape, and is bent right handed, as shown in Fig. 2, so that the filling thread 4, which unwinds from the bobbin 3 in the direction indicated by the arrow 1:, Fig. 2, will have a circular movement, and will follow the curvature of the guide portion 12", and enter the opening into the funnel -shaped uide portion 12, as shown in Fig. ],and be retained therein as long as the filling 4 is drawn off from the bobbin 3 with the right hand wind, but when the filling wound with the right hand wind 011 the bobbin has been drawn off, and the filling with the left hand wind is reached, the unwinding of the filling having the left hand wind causes the filling to have a circular movement in the opposite direction, and to pass out of the funnel-she. ed guideportion 12", and to pass 11 in t c direction of the arrow 11,, and over t e upper end of the guide 12, and into the eye 5 orrthe arms 5, so that the movement of the cutting lever 7, above described, through the operation of the tri or other device 10, will cut the filling t n'ead extending through the eye 5. The failure of the filling thread will, through suitable mechanism not shown or described herein, but forming the subject-matter of another application, )ut into operation the weft replenishing mec anisin to supply fresh filling, or operatato stop the loom.

The advantages of my improvements will be readily understood by those skilledj in the art. They are of very sim le construction and may be combined wit any ordinary self-threading shuttle.

in using my improvements, the filling thread on the bobbin will first be given a few winds in one direction, as a left hand wind, to furnish sufficient filling for one or more rectiom; to pass out of t e 7 id n dp sep nt hes position to be engaged by the cutting lever picks of the shuttle, and-[will then be given a. wind in the reverse'direction, as a right hand wind,1 1 ntil the bobbin is fullv wound, as above described." When the sorted in the shuttle from thehweitre" lens 'ishing mechanism,the 7 jade [intothe eye of the shuttlebythe anis-m, and as thefilling'isd bobbin, itis carriedil) Kits oi, ment into. the funnel-she 115135 124, or its equivalent as above ascribed, andlremains infsaid guide, allowing" the cutting lever Itol-be operated at every other ick of the shuttle, withgmt interferin wit the. ordinary operation ofi' the shutt e, until the filling with therightha'ndiwind has been entirely drawn off from the ebobbin a'nd the fillingwith the left hand. wind'has been reached. Then by reason oithe left hand wind at the filling the; filling is causedto have; (a circular movemei'i l thereverse-Idi fi innel-shaped 7 at the next. ofieratloneoi said'cuttinglever. It will beunderstoqd thatthedetails of construction of myimprovements may .be

- variedif desired, and; particularly the construction and arran ement of the guide'for the thread cutting tievi'ce, and the ,ma be adapted tobe combined with shutt es 0 dif- Havin thus described my invention, what I c aim as new and. desire to secure by Letters Patent is r 1 1. In a shuttle, a filling carrier having two winds in reverse directions, a thread cutting or'severing'device, having a guide or eye adapted to'receive the filling as theshuttle bobbin is inl the opposite wall a self-threading eye, opened at its u for the reception of I 08.11161 in the shuttle, when said filling beis thrown through the shed, when the re.- verse wind of the filling is being withdrawn from the carrier.

2. In a shuttle, a wound fili'i'ig carrier,-

fand a cutting or severin device interposed between the ti of the ingcarrier andthe the shuttle, and located on of. the shuttle from said delivery eye, said cutting or severing device provided-with two self-threading guides or delivery eye 0 e filling as the mg is unwound in one direction, andthe other guide for the rece tion of the filling unwound in'the reverse irec-' tion, and means acting with the latter guide to cut orjsever the filling.

-3& In a shuttle, a filling carrier, having two winds in reverse directions, a thread cutting or severing: device ada ted to cut or sever eges, one of said uides for the reception of t the filling as the shutt e is thrown through the shed, afterfone wind on the filling is exhausted, and while the other wind is being. L'drawn oil from the filling carrier.

4, A shuttle having a thread cutting or severing device, with a guide or eve, adapted to receive the. filling as the shuttle is thrown throu h the shed, when the reverse wind of the ing is being withdrawn from the carrier in the shuttle.

5. A shuttle having a cutting device, with per side the filling on t e filling cornes reversed in unwinding, during the flight of the shuttle.

RANDOLPH Cll OMPTON.

Witnesses JOHN C. DEWEY, M. I'IAAS. 

